Long型id数据对应MySQL数据库中 bigint 数据类型;
System.out.println(1==1L); //ture
System.out.println(1L); //1
System.out.println(1L+"2"); //12

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原文链接:https://blog.csdn.net/weixin_39746740/article/details/82053908
Long型id数据对应MySQL数据库中 bigint 数据类型;
System.out.println(1==1L); //ture
System.out.println(1L); //1
System.out.println(1L+"2"); //12

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原文链接:https://blog.csdn.net/weixin_39746740/article/details/82053908